It appears IRS did not get my 1098 from one of my mortgage companies and I missed some capital gains dividends on my 2018 return. I would like to upload my 2018 return and fix it to see what the return would say I owe, or should get back. Is it possible? If so, can you be specific in where exactly I go on this website to do that as I don't know my way around the site very well. Thanks!
